-
1Table of Contents1.
.....................................................................................................................................
12.
.....................................................................................................................................
23.
.....................................................................................................................................
34.
.....................................................................................................................................
45.
.....................................................................................................................................
56.
.....................................................................................................................................
67.
.....................................................................................................................................
7
1.ts=1/8182;n=0:8192;xh=cos(2*pi*200*n*ts);m=8;x=xh(1:m:8192);plot(n(1:256),xh(1:256));title('256
points of xh and sampled x')xlabel('n')ylabel('x[n]')hold
on;stem(n(1:m:256),x(1:256/8));hold off;soundsc(x);
-
22.x0=zeros(1,8192);x0(1:m:8192)=x;plot(n(1:256),xh(1:256));title('256
points of xh and sampled x0')xlabel('n')ylabel('x0[n]')hold
on;stem(n(1:256),x0(1:256));hold off;soundsc(x0);
-
33.f1=[0,1,1,1,1,1,1,1,1,0];x1=conv(x0,f1);plot(n(1:256),xh(1:256));title('256
points of xh and sampled x1')xlabel('n')ylabel('x1[n]')hold
on;stem(n(1:256),x1(1:256));hold off;soundsc(x1);
-
44.f2=[0,1/8,2/8,3/8,4/8,5/8,6/8,7/8,1,7/8,6/8,5/8,4/8,3/8,2/8,1/8,0];x2=conv(x0,f2);plot(n(1:256),xh(1:256));%stem(n(1:256),xh(1:256),'filled');title('256
points of xh and sampled x2')xlabel('n')ylabel('x2[n]')hold
on;stem(n(1:256),x2(1:256));hold offsoundsc(x2);% In this
reconstruction, 59th sample of x2 is eq. to 51nd sample of xh
-
55.f3 =
sin(pi*1024*[-16:16]/8192+eps)./(pi*1024*[-16:16]/8192+eps);f3w =
f3.*hann(33)';x3=conv(x0,f3w);plot(n(1:256),xh(1:256));xlabel('n')ylabel('x3[n]')%stem(n(1:256),xh(1:256),'filled');title('256
points of xh and sampled x3')hold on;stem(n(1:256),x3(1:256));hold
off;soundsc(x3);% In this reconstruction, 108th sample of x3 is eq.
to 92nd sample of xh
-
66.f4 =
sin(pi*1024*[-32:32]/8192+eps)./(pi*1024*[-32:32]/8192+eps);f4w =
f4.*hann(65)';x4=conv(x0,f4w);plot(n(1:256),xh(1:256));xlabel('n')ylabel('x4[n]')%stem(n(1:256),xh(1:256),'filled');title('256
points of xh and sampled x4')hold on;stem(n(1:256),x4(1:256));hold
off;soundsc(x4);% In this reconstruction, 83rd sample of x4 is eq.
to 92nd sample of xh
-
77.% st1 and st2 are the starting indices of xi and xh which are
needed to% account for the delay between xi and xh% In this part
errors for various reconstructions are plotted after% appropriately
shifting them
st1=59;st2=51;e2=abs(x2(st1:256+st1-1)-xh(st2:256+st2-1));plot(n(1:256),e2(1:256));xlabel('n')ylabel('abs(x2[n]-xh[n])')title('error
for reconstruction x2')
-
8st1=108;st2=92;e3=abs(x3(st1:256+st1-1)-xh(st2:256+st2-1));plot(n(1:256),e3(1:256));xlabel('n')ylabel('abs(x3[n]-xh[n])')title('error
for reconstruction x3')
-
9st1=83;st2=92;e4=abs(x4(st1:256+st1-1)-xh(st2:256+st2-1));plot(n(1:256),e4(1:256));xlabel('n')ylabel('abs(x2[n]-xh[n])')title('error
for reconstruction x4')
-
10
Published with MATLAB R2013a
Table of Contents1.2.3.4.5.6.7.
